Since next dyno will be adding additional parts along with going from HFC to test pipes does anyone know on average the hp/tq gain from hfc to test pipes? I
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08-15-2013, 08:12 PM | #1 (permalink) |
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From HFC to test pipes
Since next dyno will be adding additional parts along with going from HFC to test pipes does anyone know on average the hp/tq gain from hfc to test pipes? I assume fairly small?
Thanks Kevron Sent from my GT-N8013 using Tapatalk 2
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08-15-2013, 08:23 PM | #2 (permalink) |
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I think you loose a little tq but gain in hp. That was the decision on my build.
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09-23-2013, 11:03 AM | #3 (permalink) | |
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Trying to decide between Resonated TPs or Resonated HFCs |
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09-23-2013, 11:13 AM | #4 (permalink) |
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ARK test pipes up to 10hp and 9tq, up to 9hp and 12tq on resonated hfc's.
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09-23-2013, 11:15 AM | #5 (permalink) | |
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TPs, being more wide open, I would think it would gain more HP then just 1 doing TPs over HFCs? Any other thoughts/dynos/results around this? My setup will be fully Fast Intentions, which my build date is coming up soon. |
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09-23-2013, 11:55 AM | #6 (permalink) |
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I would say my gain is about 30hp after hfc's, catback, gen 3's and m370 manifold. I have similar exhaust as what you are getting
You get more hp with test pipes but more tq with hfc's because of the slight restriction in flow.
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09-23-2013, 12:03 PM | #7 (permalink) |
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Around +25whp with my setup. See signature.
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09-23-2013, 12:15 PM | #8 (permalink) |
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Dang it, you guys definitely aren't making the decision any easier....
Even looking at the dyno charts, I might stick w/ my order of RHFCs and just do a non-resonated catback. The only hesitation on my decision was trying to get as much power as I possibly can NA. I almost feel like the TQ #'s would be more usuable power throughout the powerban. Hmmm.... Fast Intentions Resonated HFCS paired with a NONresonated Xpipe or Fast Intentions Resonated TPs paired with an 18" resonator in the Xpipe |
09-24-2013, 02:53 PM | #9 (permalink) | |
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TP's will give u more HP but seen mostly on the top...ending up with u losing torque in the low to midrange area...I personally think that HFC's are the best way to go....I mean how often are u gonna be running ur Z on the top end? And honestly would u be running it at high rpms for long durations?
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09-24-2013, 04:59 PM | #10 (permalink) | |
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I'm strictly asking TP's vs HFCs, benefits vs cons. And no, test pipes will actually give you a lower, deeper tone, not higher. Yes they may create a bit of rasp, but that's the intent of having resonators in both the TP as well as the Xpipe IF going w/ that setup. Thanks though. The TQ factor I'm definitely taking into consideration right now. I felt immediate gains on my G37 when installing the RHFCs, even after already having the catback previously over a year. |
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09-25-2013, 09:49 AM | #11 (permalink) | |
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But hey....sound is all subjective, especially in the exhaust department with these cars....what might sound high pitched to me might sound deep toned to u...hope u figure out what will sound and work best for you...I mean everyone could give you their take on whether to go HFC's/TP's but in the end its your car that you will be driving...
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09-25-2013, 10:58 AM | #12 (permalink) | |
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Right now, I'm leaning towards to setup I initially ordered, RHFCs paired with a NONresonated Xpipe. Will be louder then my G37 setup with no 18" resonator in the X, and the Z exhaust is quite a bit shorter making it even louder as well. |
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09-23-2013, 12:32 PM | #14 (permalink) |
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You probably won't notice a differance either way you go...........Why is this such a hard decision? I would be looking at cost effectiveness not a gain of 2hp.......or 3foot pounds of torque. Plus if I had a choice I would take torque over horse power any day. That makes it an easy decision.
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09-23-2013, 01:04 PM | #15 (permalink) | |
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Not looking at the cost, looking 100% at: #1 Gains (HP/TQ) #2 Sound Last edited by 1cleanZ; 09-23-2013 at 01:45 PM. |
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